Komut
valueUpdated()
Açıklama
Özellik değerinin bir bildirim veya gösterge yoluyla güncellenmesi.
Sözdizimi
bleCharacteristic.valueUpdated ()
Parametreler
Yok
İadeler
karakteristik değeri bir bildirim veya gösterge yoluyla güncellenmişse true
Misal
…
while (peripheral.connected()) {
// while the peripheral is connected
// check if the value of the simple key characteristic has been updated
if (simpleKeyCharacteristic.valueUpdated()) {
// yes, get the value, characteristic is 1 byte so use byte value
byte value = 0;
simpleKeyCharacteristic.readValue(value);
if (value & 0x01) {
// first bit corresponds to the right button
Serial.println("Right button pressed");
}
if (value & 0x02) {
// second bit corresponds to the left button
Serial.println("Left button pressed");
}
}
}
…
while (peripheral.connected()) {
// while the peripheral is connected
// check if the value of the simple key characteristic has been updated
if (simpleKeyCharacteristic.valueUpdated()) {
// yes, get the value, characteristic is 1 byte so use byte value
byte value = 0;
simpleKeyCharacteristic.readValue(value);
if (value & 0x01) {
// first bit corresponds to the right button
Serial.println("Right button pressed");
}
if (value & 0x02) {
// second bit corresponds to the left button
Serial.println("Left button pressed");
}
}
}
…
See Also
- BLECharacteristic()
- uuid()
- properties()
- valueSize()
- value()
- valueLength()
- readValue()
- writeValue()
- setEventHandler()
- descriptorCount()
- hasDescriptor()
- descriptor()
- canRead()
- read()
- canWrite()
- canSubscribe()
- subscribe()
- canUnsubscribe()
- unsubscribe()